Run results for: Delete vs undefined vs spread

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 8 months ago

Script Preparation code:

var obj = {
  a:1,
  b:2,
  c:3
}

Tests: